Box for four tens.

[brandontw 10+ year member]

Isobaric ported //content.invisioncic.com/y282845/emoticons/wink.gif.608e3ea05f1a9f98611af0861652f8fb.gif

you sly dog you.. your trying to get my to buy one of your designs still eh? im to committed now, and i have too much time

in this.

 

[brandontw 10+ year member]

nah, i cant fit em on the front, cause they barely fit with just the 9.5in cutout hole

^^^ those are 9.5 dia. holes^^^^

 

[brandontw 10+ year member]

then they would be firing into the back of my seat.. is that kosher?

 

[brandontw 10+ year member]

nope thay wont fit on the side

these are 10" holes

 

[brandontw 10+ year member]

so the best option i see is firing all 4 subs up(toward the deck) and then the port out into the trunk like it is

 

[brandontw 10+ year member]

ya it wont work... so how does my port and box size look, the port would be 2.5X13.5X16, in a 4 cubes box... thats tuned to 32 Hz. unless im mistaken.... the box is 5 cubes before the displacement of the subs and port will this be cool you think?

 

[brandontw 10+ year member]

bigger how? longer, same lenghth, but wider? what? please!! wut size should it be?

 

[brandontw 10+ year member]

so should i make it 5X 13.5, then like 35 inches long? whats the difference? its the same tuning freq.

 

[brandontw 10+ year member]

please

 

[InhumanAcura 5,000+ posts]

He means more port area...Port area being (L x W) of the port opening... When you increase or decrease the port area the tuning will change and in compensating for tuning change you gain/loose volume.

Go to http://www.audiobahn.com and click on tech->calculators->port legnth calc.->fill in the blanks...Its not 100% accurate, but it does the job

 

[brandontw 10+ year member]

so how much bigger should it be? th bigger the port area the longer the port has to be... right? so i can only hold so big of a port befor it take all of my space up.

 

[brandontw 10+ year member]

an i have been using that calc. i just dont know what area to start with

 

[InhumanAcura 5,000+ posts]

so how much bigger should it be? th bigger the port area the longer the port has to be... right? so i can only hold so big of a port befor it take all of my space up.

 

[brandontw 10+ year member]

Grrrrrr.

 

[brandontw 10+ year member]

ok ive decided on my final plan and i will comence construction tomorrow. 54 sq inches of port(4x13.5) 20.3 inches long with all 4 subs on top. like so:

i hope it will be good